Costa Rica's forest cover fell to about 21% by the late 1980s. A 1996 law and a 3.5% national fuel tax reversed the collapse by paying more than 18,000 families to keep their trees standing — and forest cover has since climbed back above 50%. The post Costa Rica reversed its forest collapse by paying landowners to keep trees standing — more than 18,000 families signed contracts funded by a national fuel tax appeared first on Space Daily .